Patna: Bihar Chief Minister Nitish Kumar on Monday refused to speak more than what he had said on Sunday on the NDA's prime ministerial candidate even as some state BJP leaders conveyed to the party high command their strong resentment against his comments on Narendra Modi.

Emerging out of "Janata ke darbar mein mukhyamantri" programme at residence, the Bihar CM told reporters he had talked enough on Sunday and had nothing more to add.

Saying this, he left without entertaining any question. But some JD(U) leaders carried the baton, saying the party cannot compromise on its secular principle for keeping the NDA coalition intact.

"JD(U) strongly believes in secular ideology and wants to take along all the castes and communities on the path of development...if any party has problem in this we cannot help it," state party spokesman Neeraj Kumar said.

Deveshchand Thakur, former minister and a close confidante of the CM, said, "If somebody thinks time has come for aar-paar ki ladai (do or die battle) we are ready." JD(U) had on Sunday gave an eight-month deadline to its ally BJP to declare its prime ministerial candidate having "secular credibility beyond doubt" for the next general election.